Improved integral equation method based on radiation distribution factors for high-resolution radiative intensity in graded index media
| Autor: | Arafat Islam, Li-Ming Ruan, Ya-Tao Ren, Yang Li, Lin-Yang Wei, Hong Qi, Shuang Wen |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Physics
020209 energy General Engineering 02 engineering and technology Reverse Monte Carlo Radiation Condensed Matter Physics 01 natural sciences Fermat's principle 010305 fluids & plasmas Computational physics symbols.namesake Distribution (mathematics) 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Radiative transfer symbols Ray tracing (graphics) Refractive index Intensity (heat transfer) |
| Zdroj: | International Journal of Thermal Sciences. 138:393-404 |
| ISSN: | 1290-0729 |
| Popis: | An improved integral equation method based on radiation distribution factors (RDFIEM) is developed to solve the radiative intensity with high directional resolution in semitransparent media with graded refractive index (GRI). The radiation distribution factors (RDFs) are solved by using the reverse Monte Carlo curved ray tracing technique (RMCCRT). Based on the RDFs, the source terms along the curved ray path decided by the Fermat principle are predicted accurately. Then, the integral equation method (IEM) is employed to solve the radiative intensity through integral along the curved ray path. One-dimensional and two-dimensional test cases are done, and all the results show that the RDFIEM is not only flexible in treating directional radiation problems but also very accurate and efficient. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect